Diffraction patterns in ferrofluids: Effect of magnetic field and gravity

被引：21

作者：

Radha, S. ^{[1
]}

Mohan, Shalini ^{[1
,2
]}

Pai, Chintamani ^{[1
]}

机构：

[1] Univ Mumbai, Dept Phys, Bombay 400098, Maharashtra, India

[2] Univ Mumbai, UM DAE Ctr Excellence Basic Sci, Bombay 400098, Maharashtra, India

来源：

PHYSICA B-CONDENSED MATTER | 2014年 / 448卷

关键词：

Thermal lensing; Self-diffraction; Ferrofluid aggregation; Magnetic field; Gravity dependence; Spatial phase modulation; SCATTERING;

D O I：

10.1016/j.physb.2014.04.050

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

In this paper, we report the experimental observation of diffraction patterns in a ferrofluid comprising of Fe3O4 nanoparticles in hexane by a 10 mW He-Ne laser beam. An external dc magnetic field (0-2 kG) was applied perpendicular to the beam. The diffraction pattern showed a variation at different depths of the sample in both zero and applied magnetic held. The patterns also exhibit a change in shape and size as the external field is varied. This effect at due to thermally induced self-diffraction under the influence of gravity and external magnetic held. (C) 2014 Elsevier By. All rights reserved.

引用

页码：341 / 345

页数：5

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